Single piece reagent holder



FIG. 1 is a perspective view of a single piece reagent holder showing an embodiment of the new design;

FIG. 2 is a first side view thereof;

FIG. 3 is a second side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a first end view thereof; and,

FIG. 7 is a second end view thereof.

The broken lines in the drawing views are included for the purpose of illustrating portions of the single piece reagent holder that form no part of the claimed design. 

CLAIM The ornamental design for a single piece reagent holder, substantially as shown and described. 